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btrfs-progs: tune: use help and cmd_struct for printing help text

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Unify the btrfstune help text so it uses the help framework. The cmd
struct is set up only partially.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2023-01-11 18:49:52 +01:00
parent 4de40f3a5e
commit 512467c17e
1 changed files with 38 additions and 26 deletions
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64
tune/main.c
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@ -36,6 +36,7 @@
#include "common/string-utils.h"
#include "common/help.h"
#include "common/box.h"
#include "cmds/commands.h"
#include "tune/tune.h"
static char *device;
@ -59,31 +60,43 @@ static int set_super_incompat_flags(struct btrfs_root *root, u64 flags)
return ret;
}
static void print_usage(void)
{
printf("usage: btrfstune [options] device\n");
printf("Tune settings of filesystem features on an unmounted device\n\n");
printf("Options:\n");
printf(" change feature status:\n");
printf("\t-r enable extended inode refs (mkfs: extref, for hardlink limits)\n");
printf("\t-x enable skinny metadata extent refs (mkfs: skinny-metadata)\n");
printf("\t-n enable no-holes feature (mkfs: no-holes, more efficient sparse file representation)\n");
printf("\t-S <0|1> set/unset seeding status of a device\n");
printf(" uuid changes:\n");
printf("\t-u rewrite fsid, use a random one\n");
printf("\t-U UUID rewrite fsid to UUID\n");
printf("\t-m change fsid in metadata_uuid to a random UUID\n");
printf("\t (incompat change, more lightweight than -u|-U)\n");
printf("\t-M UUID change fsid in metadata_uuid to UUID\n");
printf(" general:\n");
printf("\t-f allow dangerous operations, make sure that you are aware of the dangers\n");
printf("\t--help print this help\n");
static const char * const tune_usage[] = {
"btrfstune [options] device",
"Tune settings of filesystem features on an unmounted device",
"",
"Options:",
"Change feature status:",
OPTLINE("-r", "enable extended inode refs (mkfs: extref, for hardlink limits)"),
OPTLINE("-x", "enable skinny metadata extent refs (mkfs: skinny-metadata)"),
OPTLINE("-n", "enable no-holes feature (mkfs: no-holes, more efficient sparse file representation)"),
OPTLINE("-S <0|1>", "set/unset seeding status of a device"),
"",
"UUID changes:",
OPTLINE("-u", "rewrite fsid, use a random one"),
OPTLINE("-U UUID", "rewrite fsid to UUID"),
OPTLINE("-m", "change fsid in metadata_uuid to a random UUID incompat change, more lightweight than -u|-U)"),
OPTLINE("-M UUID", "change fsid in metadata_uuid to UUID"),
"",
"General:",
OPTLINE("-f", "allow dangerous operations, make sure that you are aware of the dangers"),
OPTLINE("--help", "print this help"),
#if EXPERIMENTAL
printf("\nEXPERIMENTAL FEATURES:\n");
printf(" checksum changes:\n");
printf("\t--csum CSUM switch checksum for data and metadata to CSUM\n");
printf("\t-b enable block group tree (mkfs: block-group-tree, for less mount time)\n");
"",
"EXPERIMENTAL FEATURES:",
OPTLINE("--csum CSUM", "switch checksum for data and metadata to CSUM"),
OPTLINE("-b", "enable block group tree (mkfs: block-group-tree, for less mount time)"),
#endif
NULL
};
static const struct cmd_struct tune_cmd = {
.usagestr = tune_usage
};
static void print_usage(int ret)
{
usage(&tune_cmd);
exit(ret);
}
int BOX_MAIN(btrfstune)(int argc, char *argv[])
@ -170,8 +183,7 @@ int BOX_MAIN(btrfstune)(int argc, char *argv[])
#endif
case GETOPT_VAL_HELP:
default:
print_usage();
return c != GETOPT_VAL_HELP;
print_usage(c != GETOPT_VAL_HELP);
}
}
@ -187,7 +199,7 @@ int BOX_MAIN(btrfstune)(int argc, char *argv[])
if (!super_flags && !seeding_flag && !(random_fsid || new_fsid_str) &&
!change_metadata_uuid && csum_type == -1 && !to_bg_tree) {
error("at least one option should be specified");
print_usage();
print_usage(1);
return 1;
}